So I was invited out to a birthday party for a co-worker of my bosses sister. So I meet up with them after a date that I had earlier in the evening. It's The Sister and 5 of her smoking hot co-workers. I have to admit I was little excited about such an opportunity. When I get there the sister runs and jumps on me to give me a hug. This is odd as we normally try to refrain from any physical contact due to the circumstances. She introduces me to her friends. I had met one of 2 of them before so I was in a good comfort zone. I begin to talk to one of friends that I hadn't met before and The Sister kept coming over and hanging on me. We eventually move to the floor where the dance floor is and begin dancing (It was an 80's themed bar). Well it just so happens that I'm a pretty good dancer and it ended up being a crackerjab sandwich as I was in the center of half a dozen derrieres. This is all fun and we're having a great time when The Sister asked me if I wanted a beer. I just looked at her. Apparently I looked at her in a way I've never looked at her as she responded with "Don't look at me with your sexy look." I don't even know what the hell that means. It was a normal look. Anyway, I took this as an opportunity to get closer. I moved in to within about half an inch of her lips to gauge a reaction and whispered something in response to the sexy look comment. She didn't budge and just stared at me as if it would have been ok to move all the way in. So I back off, wink, tell her I would love a beer, and walk away. I met up with her friend again and was "getting to know her" when The Sister came over again and started hanging on me again. What was actually happening, I realized, was that she was jealous and trying to prevent me from having any success with her friend. It kinda pissed me off. I mean, she's off limits as long as she's in that relationship. She's coming over tonight and I'm going to have a little chat with her about this. I've always told her she was terrible wingman but this is a little crazy. More to come.